/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.cassandra.service.accord;

import java.util.Map;
import javax.annotation.Nullable;

import accord.local.Node;
import org.apache.cassandra.locator.InetAddressAndPort;
import org.apache.cassandra.tcm.ClusterMetadata;

/**
 * Maps network addresses to accord ids
 */
public interface AccordEndpointMapper
{
    default @Nullable Node.Id mappedIdOrNull(InetAddressAndPort endpoint) { return mappedIdOrNull(endpoint, null); }
    @Nullable Node.Id mappedIdOrNull(InetAddressAndPort endpoint, @Nullable Object logIdentityIfUnmapped);
    default @Nullable InetAddressAndPort mappedEndpointOrNull(Node.Id id) { return mappedEndpointOrNull(id, null); }
    @Nullable InetAddressAndPort mappedEndpointOrNull(Node.Id id, @Nullable Object logIdentityIfUnmapped);

    enum NodeStatus { UNKNOWN, UNHEALTHY, HEALTHY }

    default boolean isRemoved(Node.Id id) { return removedNodes().containsKey(id); }
    Map<Node.Id, Long> removedNodes();

    NodeStatus nodeStatus(Node.Id id);
    default void updateMapping(ClusterMetadata metadata) {}
}
